export function formatDate(e){
   try {
    if(!(e instanceof Date)){
        e = new Date(e)
     }
     let year = e.getFullYear();
     let month = e.getMonth()+1;
     let date = e.getDate();
 
    return [year,month,date].map(v=>{
             return (v+'').length>1?v:'0'+v
         }).join('/')
   } catch (error) {

    throw new Error(e+'必须是符合日期格式的字符串,或者时间戳,或者日期对象')
    
   }
}